Skip to content
GitLab
Menu
Projects
Groups
Snippets
/
Help
Help
Support
Community forum
Keyboard shortcuts
?
Submit feedback
Contribute to GitLab
Sign in / Register
Toggle navigation
Menu
Open sidebar
isa-afp
afp-devel
Commits
c516e3b8434f
Commit
132102e5
authored
Feb 11, 2021
by
Lawrence Paulson
Browse files
removal of unnecessary and possibly harmful attributes
parent
4ae553526864
Changes
1
Hide whitespace changes
Inline
Side-by-side
thys/Jacobson_Basic_Algebra/Group_Theory.thy
View file @
c516e3b8
...
...
@@ -29,7 +29,7 @@ locale monoid =
text \<open>p 29, ll 27--28\<close>
locale submonoid = monoid M "(\<cdot>)" \<one>
for N and M and composition (infixl "\<cdot>" 70) and unit ("\<one>") +
assumes subset
[intro, simp]
: "N \<subseteq> M"
assumes subset: "N \<subseteq> M"
and sub_composition_closed: "\<lbrakk> a \<in> N; b \<in> N \<rbrakk> \<Longrightarrow> a \<cdot> b \<in> N"
and sub_unit_closed: "\<one> \<in> N"
begin
...
...
Write
Preview
Supports
Markdown
0%
Try again
or
attach a new file
.
Attach a file
Cancel
You are about to add
0
people
to the discussion. Proceed with caution.
Finish editing this message first!
Cancel
Please
register
or
sign in
to comment